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Oxidation of H2, CO and syngas mixtures on ceria and nickel pattern anodes

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  • Patel, H.C.
  • Tabish, A.N.
  • Comelli, F.
  • Aravind, P.V.

Abstract

Understanding synthesis gas (syngas) oxidation on SOFC anodes is an important step towards commercialising SOFCs operating on realistic fuels. Using pattern anodes, we study electrochemical oxidation of H2 and CO on nickel and ceria pattern anodes with and without water. Further, H2/CO mixtures are studied in dry and wet conditions. For all the compositions studied here, the polarisation resistance on ceria pattern anodes is lower than nickel pattern anodes indicating that the reaction zone is not limited to the three phase boundary. Also, in most cases the activation energy is also lower indicating ceria can be a superior catalyst. It is found that the polarisation resistance with CO is higher than that with hydrogen for both ceria and nickel pattern anodes. For wet CO mixtures there is a possibility that water gas shift reaction can play an important role. Addition of H2 brings about a dramatic decrease in the polarisation resistance in case of dry H2/CO mixtures for both nickel and ceria pattern anodes. This indicates that hydrogen is preferentially oxidised so much so that it is possible that only hydrogen is oxidised with CO acting as a diluent.

Suggested Citation

  • Patel, H.C. & Tabish, A.N. & Comelli, F. & Aravind, P.V., 2015. "Oxidation of H2, CO and syngas mixtures on ceria and nickel pattern anodes," Applied Energy, Elsevier, vol. 154(C), pages 912-920.
    • Handle: RePEc:eee:appene:v:154:y:2015:i:c:p:912-920
    DOI: 10.1016/j.apenergy.2015.05.049
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    References listed on IDEAS

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    1. Liu, Ming & Woudstra, T. & Promes, E.J.O. & Restrepo, S.Y.G. & Aravind, P.V., 2014. "System development and self-sustainability analysis for upgrading human waste to power," Energy, Elsevier, vol. 68(C), pages 377-384.
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    Cited by:

    1. Saadabadi, S. Ali & Thallam Thattai, Aditya & Fan, Liyuan & Lindeboom, Ralph E.F. & Spanjers, Henri & Aravind, P.V., 2019. "Solid Oxide Fuel Cells fuelled with biogas: Potential and constraints," Renewable Energy, Elsevier, vol. 134(C), pages 194-214.
    2. van Biert, L. & Godjevac, M. & Visser, K. & Aravind, P.V., 2019. "Dynamic modelling of a direct internal reforming solid oxide fuel cell stack based on single cell experiments," Applied Energy, Elsevier, vol. 250(C), pages 976-990.
    3. Orlando Corigliano & Leonardo Pagnotta & Petronilla Fragiacomo, 2022. "On the Technology of Solid Oxide Fuel Cell (SOFC) Energy Systems for Stationary Power Generation: A Review," Sustainability, MDPI, vol. 14(22), pages 1-73, November.

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